import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class Reflector {
    final static int CHAR_NUMBER = 27;//26个字母和一个空格
    private List<Integer> link;
    public Reflector() {
        super();
        Integer[] array = {1,0,3,2,5,4,7,6,9,8,11,10,13,12,15,14,17,16,19,18,21,20,23,22,25,24,26};
        link = new ArrayList<Integer>();
        Collections.addAll(link, array);
    }
    int getNum(int i) {
        return link.get(i);
    }
}
